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Finding the Fourth Proportional to 71,951.69, 107,861.79 and 25,179.05

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Solution

The fourth proportional to 71,951.69, 107,861.79 and 25,179.05 is: 37,745.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,951.69 : 107,861.79 = 25,179.05 : x
  2. Step 2: Convert to fraction form
    71,951.69/107,861.79 = 25,179.05/x
  3. Step 3: Cross multiply
    71,951.69x = 107,861.79 × 25,179.05
  4. Step 4: Simplify right side
    71,951.69x = 2,715,857,403.50
  5. Step 5: Solve for x
    x = 2,715,857,403.50/71,951.69
  6. Step 6: Final answer
    x = 37,745.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.